| Category | Format | Size |
|---|---|---|
| E-education edition fifth grade science volume 1 | pptx | 6 MB |
"Common Crops" Farmland PPT Courseware
Description
"Common Crops" Farmland PPT Courseware
Let’s talk about it: What is the reason why the sowing dates of different crops in the same area are different?
Rice is a crop that loves temperature and humidity. Rice seeds germinate quickly and neatly at around 28°C. The suitable temperature for seedling growth is 25~30°C. Rice is usually sown in Jianghan Plain around April 10th. Because the area has received abundant rainfall since then, the ground temperature has risen to above 25°C, which is suitable for rice growth.
Winter wheat is a cold-tolerant crop suitable for growing in low-temperature seasons. Germination of winter wheat seeds requires sufficient air, suitable moisture, and a temperature of 15 to 20 ℃. Winter wheat is generally sown in the Jianghan Plain in late October, when the ground temperature is around 18°C and the autumn air is crisp, which is suitable for winter wheat sowing.
Different crops have different sowing times because temperatures and rainfall are different at different times, and the suitable growing conditions for different crops are different.
Are the types of crops grown in different regions the same?
Sweet potatoes generally grow in dry lands.
North China is rich in wheat, and Jiangnan is rich in rice.
Lotus root is produced in the Lake District
Look among the crops listed above to see which crops are not available locally. Then check the information to understand the habits of these crops and the conditions required for germination and growth, and then analyze why these crops are not available locally based on the situation in your hometown, and briefly record the main reasons.
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For more information about the PPT courseware "Common Crops in Farmland", please click the "Common Crops in Farmland ppt" tab.
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Update Time: 2024-08-02
This template belongs to science courseware E-education edition fifth grade science volume 1 industry PPT template
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